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混合碳源发酵生产头孢菌素C过程优化
引用本文:段生兵,张敬书,史仲平,罗洪镇,刘烦,袁国强,赵艳丽,段作营. 混合碳源发酵生产头孢菌素C过程优化[J]. 工业微生物, 2014, 44(2): 1-6
作者姓名:段生兵  张敬书  史仲平  罗洪镇  刘烦  袁国强  赵艳丽  段作营
作者单位:段生兵 (江南大学生物工程学院工业生物技术教育部重点实验室,江苏无锡,214122); 张敬书 (石药集团河北中润制药有限公司,河北石家庄,050041); 史仲平 (江南大学生物工程学院工业生物技术教育部重点实验室,江苏无锡,214122); 罗洪镇 (江南大学生物工程学院工业生物技术教育部重点实验室,江苏无锡,214122); 刘烦 (江南大学生物工程学院工业生物技术教育部重点实验室,江苏无锡,214122); 袁国强 (石药集团河北中润制药有限公司,河北石家庄,050041); 赵艳丽 (石药集团河北中润制药有限公司,河北石家庄,050041); 段作营 (江南大学生物工程学院工业生物技术教育部重点实验室,江苏无锡,214122);
基金项目:国家科技支撑计划(项目编号:2007BAI26B02),国家重点基础研究发展(973)计划项目(项目编号:2007CB714303)
摘    要:本文对头孢菌素C(Cephalosporin C,CPC)发酵过程中碳源补料控制策略进行了优化研究,提出了一种基于DO—Stat的混合碳源流加策略,提高了发酵整体性能。在7L发酵罐上对使用该策略和传统补油策略的头孢菌素发酵性能进行比较,结果表明,采用补加混合碳源(葡萄糖+豆油)策略时,CPC终浓度最高,达到36.99g/L,CPC得率也从使用传统单纯补油策略时的11.39%提高到22.19%,代谢副产物去乙酰氧头孢菌素C(DAOC)的积累量少,DAOC/CPC只有0.38%,达到生产要求。

关 键 词:混合碳源  头孢菌素C  DO—Stat  流加策略  发酵

Enhanced cephalosporin C production with novel DO-stat based carbon substrates co-feeding strategy
DUAN Sheng-bing,ZHANG Jing-shu,SHI Zhong-ping,LUO Hong-zhen,LIU Fan,YUAN Guo-qiang,ZHAO Yan-li,DUAN Zuo-ying. Enhanced cephalosporin C production with novel DO-stat based carbon substrates co-feeding strategy[J]. Industrial Microbiology, 2014, 44(2): 1-6
Authors:DUAN Sheng-bing  ZHANG Jing-shu  SHI Zhong-ping  LUO Hong-zhen  LIU Fan  YUAN Guo-qiang  ZHAO Yan-li  DUAN Zuo-ying
Affiliation:1. Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, China; 2. CSPC Hebei Zhongrun Pharmaceutical Co. Ltd. , Shijiazhuang, Hebei 050041, China
Abstract:A novel DO-stat based substrates co-feeding strategy for cephalosporin C (CPC) production by Acremonium chrysogenum (A. chrysogenum) was conducted in a 7 L fermentor via the addition of glucose (or glycerol) in couple with soybean oil. The results indicated that the co-feeding of glucose and soybean oil in the main CPC production phase was desirable for CPC fermentation. Compared with the traditional sole soybean oil feeding method, the final CPC concentra- tion could be enhanced from 25.3 g/L to a higher level of 36.99 g/L by the novel substrates co-feeding strategy. Mean- while, the major by-product of deacetoxycephalosporin C (DAOC) was reduced from 0.32 g/L to a lower level of 0. 142 g/L, and the final DAOC/CPC ratio (0.38%) could reach the CPC fermentation quality standard
Keywords:mixed carbon sources  cephalosporin C production  DO-stat  substrates feeding  fermentation
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